Theoretical and Computational Fluid Dynamics

, Volume 30, Issue 6, pp 529–542 | Cite as

Drift due to two obstacles in different arrangements

Original Article


We study the drift induced by the passage of two cylinders through an unbounded extent of inviscid incompressible fluid under the assumption that the flow is two dimensional and steady in the moving frame of reference. The goal is to assess how the resulting total particle drift depends on the parameters of the geometric configuration, namely the distance between the cylinders and their angle with respect to the direction of translation. This problem is studied by numerically computing, for different cylinder configurations, the trajectories of particles starting at various initial locations. The velocity field used in these computations is expressed in closed form using methods of the complex function theory, and the accuracy of calculations is carefully verified. We identify cylinder configurations which result in increased and decreased drift with respect to the reference case when the two cylinders are separated by an infinite distance. Particle trajectories shed additional light on the hydrodynamic interactions between the cylinders in configurations resulting in different drift values. This ensemble of results provides insights about the accuracy of models used to study biogenic transport.


Drift Wakes Complex function theory 


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Supplementary material

162_2016_394_MOESM1_ESM.mp4 (214 kb)
Supplementary material 1 (mp4 213 KB)
162_2016_394_MOESM2_ESM.mp4 (177 kb)
Supplementary material 2 (mp4 177 KB)
162_2016_394_MOESM3_ESM.mp4 (180 kb)
Supplementary material 3 (mp4 180 KB)


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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.School of Computational Science and EngineeringMcMaster UniversityHamiltonCanada
  2. 2.Department of Mathematics and StatisticsMcMaster UniversityHamiltonCanada

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